class_docstr: For `Python <http://www.python.org>`_ source code (version 3.x).
  
  .. versionadded:: 0.10
  
  .. versionchanged:: 2.5
     This is now the default ``PythonLexer``.  It is still available as the
     alias ``Python3Lexer``.
code: def analyse_text(text):
      return shebang_matches(text, r"pythonw?(3(\.\d)?)?")
  
imports: import re
  from pygments.lexer import Lexer, RegexLexer, include, bygroups, using, default, words, combined, do_insertions
  from pygments.util import get_bool_opt, shebang_matches
  from pygments.token import Text, Comment, Operator, Keyword, Name, String, Number, Punctuation, Generic, Other, Error
  from pygments import unistring
label_desc: Use image node_id 2 for calling the PythonLexer obj's underlying member method code with example usage: obj.analyse_text(text) and returns: shebang_matches